Weather History for Napa County, CA

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Tuesday, August 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 68 °F 66 °F  
Max Temperature 77 °F 80 °F 87 °F (2007)
Min Temperature 59 °F 52 °F 46 °F (2000)
Degree Days  
Heating Degree Days 0    
Month to date heating degree days 16  
Since 1 June heating degree days 66  
Since 1 July heating degree days 36  
Cooling Degree Days 3    
Month to date cooling degree days 46  
Year to date cooling degree days 194  
Since 1 June cooling degree days 174  
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 70    
Maximum Humidity 90    
Minimum Humidity 50    
Precipitation  
Precipitation 0.00 in - 0.52 in (1983)
Month to date precipitation 0.00  
Year to date precipitation 1.97  
Since 1 July precipitation 0.00  
Sea Level Pressure  
Sea Level Pressure 29.84 in    
Wind  
Wind Speed 11 mph (WSW)    
Max Wind Speed 22 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Aug. 20, 2013 Rise Set
Actual Time 6:28 AM PDT 7:55 PM PDT
Civil Twilight 6:00 AM PDT 8:23 PM PDT
Nautical Twilight 5:27 AM PDT 8:56 PM PDT
Astronomical Twilight 4:52 AM PDT 9:31 PM PDT
Moon 7:31 PM PDT (8/20) 6:04 AM PDT (8/20)
Length of Visible Light 14h 22m
Length of Day
13h 26m
Full, 100% of the Moon is Illuminated
Aug 20
Full
Aug 20
Full
Aug 28
Last Quarter
Sep 5
New
Sep 12
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 61.0 °F 55.9 °F 83% 29.86 in 10.0 mi West 8.1 mph - N/A   Clear
1:54 AM 61.0 °F 55.9 °F 83% 29.84 in 10.0 mi WNW 4.6 mph - N/A   Clear
2:54 AM 61.0 °F 55.9 °F 83% 29.82 in 10.0 mi WSW 6.9 mph - N/A   Clear
3:54 AM 62.1 °F 55.9 °F 80% 29.81 in 10.0 mi West 9.2 mph - N/A   Clear
4:54 AM 61.0 °F 55.9 °F 83% 29.82 in 10.0 mi West 10.4 mph - N/A   Clear
5:54 AM 60.1 °F 57.0 °F 90% 29.83 in 10.0 mi WSW 6.9 mph - N/A   Clear
6:37 AM 60.8 °F 57.2 °F 88% 29.87 in 10.0 mi West 6.9 mph - N/A   Mostly Cloudy
6:54 AM 61.0 °F 57.0 °F 87% 29.85 in 10.0 mi WNW 6.9 mph - N/A   Overcast
7:41 AM 62.6 °F 57.2 °F 82% 29.88 in 10.0 mi SW 5.8 mph - N/A   Overcast
7:54 AM 62.1 °F 57.0 °F 84% 29.86 in 10.0 mi WSW 8.1 mph - N/A   Overcast
8:54 AM 63.0 °F 57.0 °F 81% 29.87 in 10.0 mi West 5.8 mph - N/A   Overcast
11:54 AM 71.1 °F 57.9 °F 63% 29.87 in 10.0 mi SSW 8.1 mph - N/A   Clear
12:54 PM 73.0 °F 57.9 °F 59% 29.86 in 10.0 mi SSW 12.7 mph - N/A   Clear
1:54 PM 73.0 °F 57.0 °F 57% 29.85 in 10.0 mi SSW 16.1 mph - N/A   Clear
2:54 PM 75.0 °F 57.9 °F 55% 29.82 in 10.0 mi SSW 13.8 mph - N/A   Clear
3:54 PM 77.0 °F 57.0 °F 50% 29.80 in 10.0 mi SSW 16.1 mph - N/A   Clear
4:54 PM 73.0 °F 57.9 °F 59% 29.78 in 10.0 mi SSW 16.1 mph - N/A   Clear
5:54 PM 71.1 °F 57.0 °F 61% 29.78 in 10.0 mi South 18.4 mph - N/A   Clear
6:54 PM 69.1 °F 57.9 °F 68% 29.79 in 10.0 mi SSW 15.0 mph 21.9 mph N/A   Clear
7:54 PM 69.1 °F 57.0 °F 65% 29.82 in 10.0 mi West 10.4 mph - N/A   Clear
8:54 PM 64.0 °F 55.9 °F 75% 29.84 in 10.0 mi West 13.8 mph - N/A   Clear
9:54 PM 61.0 °F 55.9 °F 83% 29.86 in 10.0 mi West 15.0 mph - N/A   Clear
10:54 PM 61.0 °F 55.9 °F 83% 29.86 in 10.0 mi West 15.0 mph - N/A   Clear
11:54 PM 60.1 °F 55.9 °F 86% 29.86 in 10.0 mi West 12.7 mph - N/A   Clear